Optical Lens Testing 1

Lens Testing

Our optical testing instrumentation enables us to make a wide range of measurements on optical systems including various measures of image quality, first order system characteristics, individual element parameters, and many more.

To get started on your lens testing project, complete our IQ Lab Testing Questionnaire.

Spectral Bands

  • Visible (400-700nm)
  • NIR (700-1,000nm)
  • SWIR (1-2.5 micros)
  • MWIR (3-5 micros)
  • LWIR (8-12 microns)

Optical Lens Testing 2

Element Characteristics

  • Radius of Curvature
  • Center Thickness
  • Diameter
  • Index of Refraction
  • Abbe Number
  • Surface Irregularity

Image Quality

  • Modulation Transfer Function (MTF)
  • Astigmatism
  • Field Curvature and Tilt
  • Distortion
  • Relative Illumination
  • Relative Spectral Transmission
  • Total Transmission
  • Stray Light
  • Veiling Glare

Optical Lens Testing 3

Lens Characteristics

  • Effective Focal Length
  • Flange Focal Length
  • Back Focal Length
  • F-Number
  • Entrance and Exit Pupil Diameters

Optical Lens Testing 4

Imager Testing

Our I-SITE™  based test instrumentation allows us to make many types of measurements on both visible (CMOS, CCD, etc.) and infrared (thermal) imagers as well as system level tests (i.e., lens and imager).

Spectral Bands

  • Visible (400-700 nm)
  • NIR (700-1,000 nm)
  • SWIR (1-2.5 microns)
  • MWIR (3-5 microns)
  • LWIR (8-12 microns)

Thermal IR Systems

  • Minimum Resolvable Temperature Difference (MRTD)
  • Minimum Detectable Temperature Difference (MDTD)
  • Noise Equivalent Temperature Difference (NEDT)

Visible, NIR, and SWIR Imagers

  • Modulation Transfer Function (MTF)
  • Contrast
  • Linearity
  • Signal Transfer Function (SiTF)
  • Noise Power Spectrum (NPS)
  • Root Mean Square Noise (RMS)
  • Noise Equivalent Luminance (NEL)
  • Minimum Resolvable Contrast (MRC)
  • Minimum Detectable Contrast (MDC)


  • Analog RS-170 and CCIR
  • CameraLink
  • GigE